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| 題名: | Measurement of the CP violation parameters in B0→π+π- decays |
| 作者: | 陳鎰鋒;Prothmann, K.;Adachi, I.;Aihara, H.;Asner, D. M.;Bay, A.;Behera, P.;Bhardwaj, V.;Bhuyan, B.;Bonvicini, G.;Bozek, A.;Chen, A.;Chen, P.;Chistov, R.;Cho, K.;Choi, S.-K.;Choi, Y.;Cinabro, D.;Danilov, M.;Doležal, Z.;Drásal, Z.;Dutta, D.;Dutta, K.;Eidelman, S.;Farhat, H.;Fast, J. E.;Frey, A.;Ganguly, S.;Hara, T.;Hayasaka, K.;Higuchi, T.;Hoshi, Y.;Kawasaki, T.;Kim, H. J.;Kim, K. T.;Kinoshita, K.;Ko, B. R.;Kodyš, P.;Korpar, S.;Križan, P.;Kronenbitter, B.;Kuzmin, A.;Lee, S.-H.;Li, Y.;Gioi, L. Li;Libby, J.;Liu, C.;Liventsev, D.;Lukin, P.;Miyata, H.;Muramatsu, N.;Mussa, R.;Nisar, N. K.;Nishida, S.;Ogawa, S.;Okuno, S.;Olsen, S. L.;Pakhlov, P.;Park, C. W.;Park, H.;Pedlar, T. K.;Petrič, M.;Piilonen, L. E.;Röhrken, M.;Ryu, S.;Sandilya, S.;Santelj, L.;Sanuki, T.;Schneider, O.;Senyo, K.;Seon, O.;Shen, C. P.;Shibata, T.-A.;Shwartz, B.;Sohn, Y.-S.;Solovieva, E.;Stanič, S.;Steder, M.;Sumihama, M.;Sumiyoshi, T.;Tatishvili, G.;Teramoto, Y.;Tsuboyama, T.;Uchida, M.;Uehara, S.;Unno, Y.;Uno, S.;Urquijo, P.;Ushiroda, Y.;Vanhoefer, P.;Varner, G.;Vorobyev, V.;Wagner, M. N.;Wang, X. L.;Watanabe, M.;Watanabe, Y.;Won, E.;Yashchenko, S.;Yusa, Y.;Zhang, Z. P.;Zhilich, V. |
| 貢獻者: | 理學院物理學系 |
| 關鍵詞: | ddc:530;FOS: Physical sciences;High Energy Physics - Experiment;High Energy Physics - Experiment (hep-ex);info:eu-repo/classification/ddc/530;Physics |
| 日期: | 2013-11-19 |
| 上傳時間: | 2026-04-23 12:12:55 (UTC+8) |
| 出版者: | American Physical Society;American Physical Society (APS) |
| 摘要: | 摘要： We present a measurement of the time-dependent charge-parity (CP) violation parameters in B0 -> pi+ pi- decays. The results are obtained from the final data sample containing 772 million BBbar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the CP violation parameters Acp = +0.33 +/- 0.06 (stat) +/- 0.03 (syst) and Scp = -0.64 +/- 0.08 (stat) +/- 0.03 (syst), where Acp and Scp represent the direct and mixing-induced CP asymmetry, respectively. Using an isospin analysis including results from other Belle measurements, we find 23.8 < phi2 < 66.8 degrees is disfavored at the 1 sigma level, where phi2 is one of the three interior angles of the CKM unitarity triangle related to B_{u,d} decays. 16 pages, 5 figures, CKM2012 conference paper, Submitted to PRD
出版者： American Physical Society (APS)
出版日期： 2013-11-19
出處： Physical Review D, 2013-11, Vol.88 (9)
識別號： ISSN: 1550-7998
識別號： DOI: 10.1103/physrevd.88.092003
識別號： DOI: 10.48550/arxiv.1302.0551 |
| 顯示於類別: | [物理學系] 期刊論文
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